Theoretical simulation of a novel birefringent photonic crystal fiber with surface plasmon resonance around 1300 nm**Project partly supported by the National Basic Research Development Program of China (Grant No. 2010CB327604), the National Natural Science Foundation of China (Grant No. 61377100), and the Natural Science Foundation of Guangdong Province, China (Grant No. S2013040015665).

Abstract

In this paper, a novel birefringent photonic crystal fiber (PCF) with the silver-coated and liquid-filled air-holes along the vertical plane is designed. Simulation results show that the thickness of silver layer, the sizes of holes, and the refractive index of liquid strongly strengthen the gaps between two polarized directions. The surface plasmon resonance peak along y axis can be up to 675.8 dB/cm at 1.33 μm. The proposed PCF has important application in polarization devices, such as filters and beam splitters.